package com.seedwill.common.query.filter;

/**
 * 查询常量设定
 * 
 * @author kdyi
 *
 */
public interface FilterSchemaContext {

	/**
	 * 空格
	 */
	public static final String SPACE = " ";
	/**
	 * SELECT
	 */
	public static final String SELECT = "select";
	/**
	 * DISTINCT常量
	 */
	public static final String DISTINCT = "distinct";
	/**
	 * 匹配所有
	 */
	public static final String MATCH_ALL = " * ";
	/**
	 * FROM语句
	 */
	public static final String FULL_FROM = " from ";
	/**
	 * ORDER BY 语句
	 */
	public static final String FULL_ORDER_BY = " order by ";
	/**
	 * 升序语句
	 */
	public static final String FULL_ASC = " asc";
	/**
	 * 降序语句
	 */
	public static final String FULL_DESC = " desc";
	/**
	 * 逗号分割
	 */
	public static final String FULL_COMMA_SEP = ", ";
}
